451 Unavailable For Legal Reasons

The HyperText Transfer Protocol (HTTP) 451 Unavailable For Legal Reasons client error response code indicates that the user requested a resource that is not available due to legal reasons, such as a web page for which a legal action has been issued.

Status

Example

Note: the Link header might also contain a rel="blocked-by" relation identifying the entity and implementing blockage, not any other entity mandating it.

Any attempt to identify the entity ultimately responsible for the resource being unavailable, such as the name of the person or organization that made a legal demand resulting in the content's removal belongs in the response body, not in the rel="blocked-by" link.

<html>
<head><title>Unavailable For Legal Reasons</title></head>
<body>
<h1>Unavailable For Legal Reasons</h1>
<p>This request may not be serviced in the Roman Province
of Judea due to the Lex Julia Majestatis, which disallows
access to resources hosted on servers deemed to be
operated by the People's Front of Judea.</p>
</body>
</html>